sio_puc.c revision 185059 
1/*-
2 * Copyright (c) 2002 JF Hay.  All rights reserved.
3 * Copyright (c) 2001 M. Warner Losh.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include <sys/cdefs.h>
27__FBSDID("$FreeBSD: head/sys/dev/sio/sio_puc.c 185059 2008-11-18 21:01:54Z jhb $");
28
29#include <sys/param.h>
30#include <sys/systm.h>
31#include <sys/bus.h>
32#include <sys/conf.h>
33#include <sys/kernel.h>
34#include <sys/lock.h>
35#include <sys/malloc.h>
36#include <sys/mutex.h>
37#include <sys/module.h>
38#include <sys/tty.h>
39#include <machine/bus.h>
40#include <sys/timepps.h>
41
42#include <dev/puc/puc_bus.h>
43
44#include <dev/sio/siovar.h>
45#include <dev/sio/sioreg.h>
46
47static	int	sio_puc_attach(device_t dev);
48static	int	sio_puc_probe(device_t dev);
49
50static device_method_t sio_puc_methods[] = {
51	/* Device interface */
52	DEVMETHOD(device_probe,		sio_puc_probe),
53	DEVMETHOD(device_attach,	sio_puc_attach),
54	DEVMETHOD(device_detach,	siodetach),
55
56	{ 0, 0 }
57};
58
59static driver_t sio_puc_driver = {
60	sio_driver_name,
61	sio_puc_methods,
62	0,
63};
64
65static int
66sio_puc_attach(device_t dev)
67{
68	uintptr_t rclk;
69
70	if (BUS_READ_IVAR(device_get_parent(dev), dev, PUC_IVAR_CLOCK,
71	    &rclk) != 0)
72		rclk = DEFAULT_RCLK;
73	return (sioattach(dev, 0, rclk));
74}
75
76static int
77sio_puc_probe(device_t dev)
78{
79	device_t parent;
80	uintptr_t rclk, type;
81	int error;
82
83	parent = device_get_parent(dev);
84
85	if (BUS_READ_IVAR(parent, dev, PUC_IVAR_TYPE, &type))
86		return (ENXIO);
87	if (type != PUC_TYPE_SERIAL)
88		return (ENXIO);
89
90	if (BUS_READ_IVAR(parent, dev, PUC_IVAR_CLOCK, &rclk))
91		rclk = DEFAULT_RCLK;
92#ifdef PC98
93	SET_FLAG(dev, SET_IFTYPE(COM_IF_NS16550));
94#endif
95	error = sioprobe(dev, 0, rclk, 1);
96	return ((error > 0) ? error : BUS_PROBE_LOW_PRIORITY);
97}
98
99DRIVER_MODULE(sio, puc, sio_puc_driver, sio_devclass, 0, 0);
100